*4.5. Mechanical Testing*

A texture analyzer (XT plus, Stable Micro Systems, Godalming, UK) was used to assess the mechanical strength of the films using the ASTM D882 standard method [32]. Tensile strength (MPa) and elongation at break (%) of the prepared samples were evaluated. The equations utilized in the determination of TS and EAB are as follows.

$$TensileStrength(TS) = \left(\frac{F}{A}\right) \tag{1}$$

The variable *F* denotes the maximum force, while *A* stands for the cross-sectional area of the film.

$$\text{Elongation}\\
theta(\text{EAB})(\%) = \frac{Lf - Li}{Li} \times 100 \tag{2}$$

The symbol *Li* represents the initial length of the film, while *Lf* denotes the length of the film in millimeters at the point of break.
